一、引言由于均匀磁化的二维和三维长方体与通常遇见的许多地质特征相似,因而在磁异常的解释中,它们常被用来当作模型。在二维情况下,长方体底部为无限延深,只要磁化方向和磁化强度相同,则长方体所产生的磁异常与具有相同水平顶面的平行侧面倾斜棱柱体所产生的磁异常是一样的(据Bruckshaw和Kunaratnam)。所以这类倾斜棱柱的磁异常也可以利用长方体模型来分析。在运用长方体近似的磁法解释中,通常采用的方法是将实测异常与按不 I. INTRODUCTION Since uniformly magnetized two-dimensional and three-dimensional cuboids are similar to many of the commonly encountered geological features, they are often used as models in the interpretation of magnetic anomalies. In the two-dimensional case, the bottom of the cuboid is infinitely extended. The magnetic anomaly produced by the cuboid is the same as the magnetic anomaly produced by the parallel-sided sloping prism with the same horizontal top, as long as the magnetization direction and the magnetization are the same Bruckshaw and Kunaratnam). Therefore, the magnetic anomaly of such tilted prisms can also be analyzed by using the cuboid model. In the use of rectangular interpretation of the magnetic method, the commonly used method is to measure abnormal and press